Any thoughts and advice would be appreciated. My customer has a 26kw combi and low water pressure and flow. The development of the property would mean 2 bathrooms in addition to the kitchen plumbing.
They want hot and cold supplies to the 2 showers that cannot be affected by drawing off water from other outlets but do not want a cylinder in the airing cupboard as this will provide additional space to a bedroom.
An unvented cyinder with the combi will not gaurantee the necessary flow rates for the showers so an alternative solution is needed.
I'm thinking about installing a 50 gallon cistern in the attic with a vented direct cylinder situated a couple of feet below. Basically, the base of the cistern will be level with the shower outlet of the cylinder(approx 1/3rd down). I'm looking at installing a 3 bar negative head pump at the base of the cylinder to provide hot and cold water to the 2 showers only.
My concern is the level of the water in the cwsc dropping below the top of the cylinder and in turn drawing in air via the vent. Any thoughts would be gratefully received. Cheers, ben. Ps: they have s**t loads of money but no budget!
They want hot and cold supplies to the 2 showers that cannot be affected by drawing off water from other outlets but do not want a cylinder in the airing cupboard as this will provide additional space to a bedroom.
An unvented cyinder with the combi will not gaurantee the necessary flow rates for the showers so an alternative solution is needed.
I'm thinking about installing a 50 gallon cistern in the attic with a vented direct cylinder situated a couple of feet below. Basically, the base of the cistern will be level with the shower outlet of the cylinder(approx 1/3rd down). I'm looking at installing a 3 bar negative head pump at the base of the cylinder to provide hot and cold water to the 2 showers only.
My concern is the level of the water in the cwsc dropping below the top of the cylinder and in turn drawing in air via the vent. Any thoughts would be gratefully received. Cheers, ben. Ps: they have s**t loads of money but no budget!